BS-0 Precision Dividing Head:The indexing head doesn't only look great but allows you to do more with your milling machine: measuring specific angles and dividing a circle into equidistant arcs. It comes with 3 interchangeable indexing plates and a tailstock to ensure more precise and stable work. It will be your perfect assistant to machine the flutes of a milling cutter, cut the teeth of a gear, curved mill slots, or drill a bolt hole circle around the circumference of a part.